Earlier a friend called me while working at a client location and needed to know how to configure the VLAN on a Cisco 7940 IP Phone. I always forget the different ways to unlock different phones and wasn’t having an easy time locating the method on Google but finally did locate how to unlock the the Cisco 7940. Below is information on how to unlock the Cisco 7940 phones.
I was working on a presentation this morning and as I was writing I realized I did not have a quick fast way to make a list of all the internal Ips on a LAN (Local Area network). Many of the tools I use including nmap, nessus and nexpose will accept a list of ips so I decided to whip up a quick dirty shell script to get the job done. I may clean it up in the future but for now it does its job. This is meant to work on Backtrack 4 but in its current state it will work on any Debian based distro. As always with any code found on the internet you use this at your own risk. Also I am sure this can be done better but like I said it was a 10 minute fix.
TCtrace is like a brother to itrace and traceroute but it uses TCP SYN packets to trace. This makes it possible for you to trace through firewalls if you know one TCP service that is allowed to pass from the outside. Once again its a very simple tool like the last few I have reviewed and it has one specific function.
Netmask is another simple tool which does one thing and that is, makes a ICMP netmask request. By determining the netmasks of various computers on a network, you can better map your subnet structure and infer trust relationships.
Lanmap is one of those tools I never really used until now. Its actually very cool. Lanmap sits quietly on a network and builds a picture of what it sees and outputs it in svg,png or gif format. I let it run on a test network far a hour or so and was impressed with the output. The only drawback is that it doesn’t “see” through switches so it can only do the private subnet the computer is physically on.